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Full text of "The Flow Of Gases In Furnaces"

312

APPENDIX VIII

TABLE 3

RELATIONSHIP BETWEEN THE WALL VOLUME AND AREA AND THE FREE
VOLUME AND AREA WITHIN THE CHECKER WORK, FOR VARIOUS
RATIOS OF WALL THICKNESS AND CHECKER OPENING, BASED UPON
SQUARE CHECKER PASSES

Ratio of Wall Thickness to Checker Opening
				Brick Area
	Free Area

Diameter of Square Pass
				or Volume
	or Volume


				per Unit of
	per "Unit of


	
	
	
	Area or
	Area or

Wall
	Pass
	Wall
	Pass
	Space
	Space

1.00
	0.33
	3.00
	1.00
	93.75
	6.25

1.00
	0.40
	2.50
	1.00
	91.84
	8.16

1.00
	0.50
	2.00
	1.00
	88.88
	11.12

1.00
	0.67
	1.50
	1.00
	84.00
	16.00

1.00
	1.00
	1.00
	1.00
	75.00
	25.00

1.00
	1.50
	0.67
	1.00
	64.00
	36.00

1.00
	2.00
	0.50
	1.00
	55.56
	44.44

1.00
	2.50
	0.40
	1.00
	48.98
	51.02

1.00
	3.00
	0.33
	1.00
	43.75
	56.25

1.00
	3.50
	0.28
	1.00
	39.51
	60.49

1.00
	4.00
	0.25
	1.00
	36.00
	64.00

1.00
	4.50
	0.22
	1.00
	33.06
	66.94

1.00
	5.00
	0.20
	1.00
	30.56
	69.44

1.00
	6.00
	0.17
	1.00
	26.53
	73.47

The values for the last two columns of this table were obtained
from a table contained in Mr. Boynton's paper.